Nucleation of dendritic primaryα(Al) phase with addition of element Ce and Sr in hypoeutectic Al-7%Si-Mg cast alloy was investigated by using differential scanning calorimetry (DSC) and scanning electron microsco...Nucleation of dendritic primaryα(Al) phase with addition of element Ce and Sr in hypoeutectic Al-7%Si-Mg cast alloy was investigated by using differential scanning calorimetry (DSC) and scanning electron microscopy. DSC results were used to calculate the activation energy and nucleation work of primaryα(Al) phase. The results show that the values of activation energy and nucleation work are decreased and the nucleation frequency is increased with the additions of Ce and Sr to the alloys. Moreover, the grain size of dendriticα(Al) phase is well refined, and the nucleation temperatures of primaryα(Al) dendrites are decreased with the additions of Ce and Sr. The effects of elements Ce and Sr additions on kinetic nucleation of primary α(Al) phases were also discussed in hypoeutectic Al-7%Si-Mg cast alloy.展开更多
The biological characteristics of crustacean spermatozoa is important for the artificial reproduction and genetic breeding. With reference to the latest studies and related materials, this paper reviewed the research ...The biological characteristics of crustacean spermatozoa is important for the artificial reproduction and genetic breeding. With reference to the latest studies and related materials, this paper reviewed the research progress in the biological characteristics of crustacean spermatozoa, such as morphological structure of sperm, spermatogenesis, sperm viability, preservation in vitro and acrosome reaction et al. The prospects of the research field have also been anticipated.展开更多
Oxytrichidae s. l. ciliates usually have 18 frontal-ventral-transverse cirri which are clustered to six distinct groups usu- ally originating from six longitudinal primordia segregating 1, 3, 3, 3, 4, 4 cirri. During ...Oxytrichidae s. l. ciliates usually have 18 frontal-ventral-transverse cirri which are clustered to six distinct groups usu- ally originating from six longitudinal primordia segregating 1, 3, 3, 3, 4, 4 cirri. During morphogenesis, three dorsal kinetics anlagen are primarily formed. Fragmentation of kinety 3 usually present, while sometimes secondarily lost. Dorsomarginal kineties are formed, while sometimes lost. Oxytrichids tend to have overlapping characters, e.g. cell shape and size, infraciliature, pellicle fea- tures. This makes a great problem for genera separation. In the present work, all typical 18 frontal-ventral-transverse-cirri Oxytrichi- dae s. 1. genera were revised systematically based on their living morphology, ciliature patterns and dorsal morphogenetic features. The outline of the genera, the schematic illustrations, and the key to typical 18 frontal-ventral-transverse-cirri genera of Oxytrichidae s. l. were clarified. Additionally, some morphological and morphogenetic patterns were summarized and compared.展开更多
The decomposition kinetics of Algerian Tamazarte kaolinite(TK)was investigated using thermogravimetric analysis(TG).Differential thermal analysis(DTA)and TG experiments were carried out between room temperature and140...The decomposition kinetics of Algerian Tamazarte kaolinite(TK)was investigated using thermogravimetric analysis(TG).Differential thermal analysis(DTA)and TG experiments were carried out between room temperature and1400°C,at differentheating rates from10to40°C/min.The activation energies,measured by DTG from isothermal treatments usingJohnson-Mehl-Avrami(JMA)and Ligero methods and by non-isothermal treatments using Ozawa,Boswell and Kissinger methods,were around151and144kJ/mol,respectively.The Avrami parameter of growth morphology(indicating the crystallization mode)was found to be around1.57using non-isothermal treatments;however,when using isothermal treatments it is found to be equal to1.35.The numerical factor,which depends on the dimensionality of crystal growth,is found to be1.53using Matusita equation.Thefrequency factor calculated by the isothermal treatment is equal to1.55×107s-1.The results show that the bulk nucleation is followedby three-dimensional growth of metakaolinite with polyhedron-like morphology controlled by diffusion from a constant number ofnuclei.展开更多
QRAL contraceptives are widely used to prevent pregnancy. A number of studies have dem- onstrated the increased risk of venous throm- boembolism in women taking oral contracep-tives.1, 2 Pulmonary embolism (PE) and ...QRAL contraceptives are widely used to prevent pregnancy. A number of studies have dem- onstrated the increased risk of venous throm- boembolism in women taking oral contracep-tives.1, 2 Pulmonary embolism (PE) and deep vein throm- bosis (DVT) are two clinical presentations of venous thromboembolism which share the same predisposing factors.3 This article described a female patient who taked oral contraceptives and had an unhealthy life habit de- veloped PE and DVT. CASE DESCRIPTION展开更多
The article discusses the problem of the unity of Ludwig Wittgenstein's philosophy. It is demonstrated that Wittgenstein applied two methods of study. Changes in his philosophy are correlated with modifications in hi...The article discusses the problem of the unity of Ludwig Wittgenstein's philosophy. It is demonstrated that Wittgenstein applied two methods of study. Changes in his philosophy are correlated with modifications in his method of thinking and investigation. In his Tractatus Logico-Philosophicus, the only correct method is logical proposition analysis. In the early 1930s, he transformed his philosophy into a phenomenological description of experience, defining its aim as the development of phenomenological language. After 1933, Wittgenstein recognised the grammatical dimension of language and created tools of grammatical analysis. He introduced the notions of language-games and life forms. His philosophy turned into morphology and a description of human language practice.展开更多
A 12-week feeding trial was conducted to evaluate the effects of dietary stachyose on the growth performance, digestive enzymes activities and intestinal structures of juvenile turbot(Scophthalmus maximus L). Five iso...A 12-week feeding trial was conducted to evaluate the effects of dietary stachyose on the growth performance, digestive enzymes activities and intestinal structures of juvenile turbot(Scophthalmus maximus L). Five isonitrogenous(49.58% crude protein) and isolipidic(10.50% crude lipid) diets were formulated to contain 0(Control), 0.625%(S-0.625), 1.25%(S-1.25), 2.5%(S-2.5) and 5%(S-5) stachyose, respectively. With the increase of stachyose level, the growth performance and feed utilization of turbot, such as the specific growth rate, final mean body weight, weight gain rate and feed efficiency, increased significantly(P < 0.05) and then stabilized. The feed intake of fish fed S-5 was significantly higher(P < 0.05) than that of fish in other groups. The activities of trypsin, intestinal caseinolytic, stomach and intestinal amylase were significantly influenced by stachyose(P < 0.05). The highest values of trypsin and intestinal caseinolytic activities were observed in group S-1.25, while the highest activity of stomach amylase and the lowest activity of intestine amylase were observed in group S-5. No lesion or damage was found on the distal intestine structures of fish from all treatments, while the height of simple folds in the distal intestine was significantly increased(P< 0.05) when 1.25% or 2.5% stachyose was added in the diets. These results indicated that moderate level of stachyose(1.25%) improves the growth performance, feed utilization, digestive enzyme activities and the distal intestine structures of juvenile turbot.展开更多
Linguistic marker is a common phenomenon, and there are different levels of markers in various languages. Mark theory was first proposed by the Prague School in 1930s, which is an important principle of language analy...Linguistic marker is a common phenomenon, and there are different levels of markers in various languages. Mark theory was first proposed by the Prague School in 1930s, which is an important principle of language analysis system. The function and meaning of markup languages are mainly pragmatic, which have procedural meaning and no conceptual meaning. Markedness phenomenon is not only the inherent characteristics of language symbols, but also the product of social life and different cultures. Due to the great difference between cultural background and social environment of Chinese and English speaker, thus there are many similarities and differences in the language, society and culture mark. The mark phenomena of English nouns are mainly related to the category of nouns and the opposite nouns. However, Chinese nouns have no strict morphological changes. In this paper, we discuss the theory of mark phenomenon and analyze a contrastive study on mark phenomena of English and Chinese Languages.展开更多
Most of the Zambian population, the poor people in affluent society, are enmeshed in the net of poverty. The Zambian government seems to have failed in its contractual obligation to respect and sustain its social cont...Most of the Zambian population, the poor people in affluent society, are enmeshed in the net of poverty. The Zambian government seems to have failed in its contractual obligation to respect and sustain its social contract with the people. There is a seemingly total collapse of social security, increased unemployment rate and consequently decreased living conditions among the youth. This study sets out to investigate the correlation between unemployment and living conditions in Kaunda Square Stage II by analyzing the impact of unemployment and suggests strategic solutions to mitigate the levels of unemployment. The primary objective of this study is to investigate the impact on the living conditions caused by unemployment in Zambia specifically in Kaunda Square Stage II and adopt strategic solutions that will mitigate creation of jobs to improve the living conditions. The study underscores that unemployment is a universal phenomenon, not necessarily a peculiar characteristic of any segment of the society. Reducing poverty, preventing excessive inequality, and generating adequate employment are the three most important goals of a macroeconomic strategy that seeks to improve the living standards of the population. Inequality and employment are each a complex phenomenon and difficult to capture with a single measurement, particularly in a low-income economy undergoing change. It is in this context that the study intends to investigate the correlation between unemployment and living conditions in Kaunda Square Stage II and to provide strategic solutions that may improve living conditions in Kaunda Square Stage II. The study concludes that high unemployment in Kaunda Square Stage II increases poverty which subsequently affects living conditions. Therefore, when, unemployment rates increase the opportunities for earning income decreases which instigate individuals to be poor. The paper closes with reflections on how good strategic solutions can be used to underwrite more employment reduction strategies.展开更多
The living morphology and infraciliature of a heterotrichous ciliate, Folliculinopsis producta (Wright, 1859) Frauré Fremiet, 1936, which was collected from the north coast of China, were investigated by in vivo ...The living morphology and infraciliature of a heterotrichous ciliate, Folliculinopsis producta (Wright, 1859) Frauré Fremiet, 1936, which was collected from the north coast of China, were investigated by in vivo observation and protargol impregnation techniques. As a new contribution, a redescription is presented: large Folliculinopsis of green to dark green in color, 800-1500 μm in size; two peristomial lobes of approximately equal size, 300-400 μm in length; adoral zone of membranelles containing about 1000 membranelles, lying along lobe margins and exhibiting two circles within buccal cavity; 50-70 somatic kineties in mid body; macronucleus miniliform, consisting of about 20 beads; lorica smooth, vase shaped, (300-500) μm×(90-130) μm in size, with 5-12 spiral ridges on neck tube; marine habitat.展开更多
Objective To explore the effects of Scutellaria baicalensis on activity and biofilm formation of Klebsiella pneumonia(Kp).Methods The broth and agar dilution methods were carried out to determine minimum inhibitory co...Objective To explore the effects of Scutellaria baicalensis on activity and biofilm formation of Klebsiella pneumonia(Kp).Methods The broth and agar dilution methods were carried out to determine minimum inhibitory concentration and minimum bactericidal concentration of Scutellaria baicalensis for TW518.VITEK-32 system was used to assay TW518 susceptibility to antibiotics.Kp biofilms were formed in vitro and stained with Bac Light Live/Dead stain.The class integron geneⅠ1 m RNA expression was analyzed with RT-PCR.Results The minimum inhibitory concentration of Scutellaria baicalensis on TW518 identified as a Kp colony was 32 mg/ml,and minimum bactericidal concentration was 64 mg/ml.Scutellaria baicalensis and broad-spectrum penicillin,cephalosporin,quinolones,or beta-lactamase had synergistic bactericidal effects.Biofilm formation activity of Kp treated with Scutellaria baicalensis was significantly lower than that of the control group.And class integron geneⅠ1 m RNA expression of TW518 was significantly inhibited by Scutellaria baicalensis.Conclusions Scutellaria baicalensis has sterilization effect on Kp,and Scutellaria baicalensis could effectively inhibit Kp biofilm formation with prolonged treatment.Scutellaria baicalensis might inhibit Kp biofilm formation through down-regulating integron geneⅠ1 expression.展开更多
基金Project (42-QP-009) support by Research Fund of the State Key Laboratory of Solidification Processing,ChinaProject (B08040) supported by the Program of Introducing Talents of Discipline to Universities ("111"Project),China
文摘Nucleation of dendritic primaryα(Al) phase with addition of element Ce and Sr in hypoeutectic Al-7%Si-Mg cast alloy was investigated by using differential scanning calorimetry (DSC) and scanning electron microscopy. DSC results were used to calculate the activation energy and nucleation work of primaryα(Al) phase. The results show that the values of activation energy and nucleation work are decreased and the nucleation frequency is increased with the additions of Ce and Sr to the alloys. Moreover, the grain size of dendriticα(Al) phase is well refined, and the nucleation temperatures of primaryα(Al) dendrites are decreased with the additions of Ce and Sr. The effects of elements Ce and Sr additions on kinetic nucleation of primary α(Al) phases were also discussed in hypoeutectic Al-7%Si-Mg cast alloy.
基金supported by the Jiangsu Province Science and Technology Development Project (Grant No. BN2010026)
文摘The biological characteristics of crustacean spermatozoa is important for the artificial reproduction and genetic breeding. With reference to the latest studies and related materials, this paper reviewed the research progress in the biological characteristics of crustacean spermatozoa, such as morphological structure of sperm, spermatogenesis, sperm viability, preservation in vitro and acrosome reaction et al. The prospects of the research field have also been anticipated.
基金supported by the National Natural Science Foundation of China (31372148)the Fundamental Research Funds for the Central Universities
文摘Oxytrichidae s. l. ciliates usually have 18 frontal-ventral-transverse cirri which are clustered to six distinct groups usu- ally originating from six longitudinal primordia segregating 1, 3, 3, 3, 4, 4 cirri. During morphogenesis, three dorsal kinetics anlagen are primarily formed. Fragmentation of kinety 3 usually present, while sometimes secondarily lost. Dorsomarginal kineties are formed, while sometimes lost. Oxytrichids tend to have overlapping characters, e.g. cell shape and size, infraciliature, pellicle fea- tures. This makes a great problem for genera separation. In the present work, all typical 18 frontal-ventral-transverse-cirri Oxytrichi- dae s. 1. genera were revised systematically based on their living morphology, ciliature patterns and dorsal morphogenetic features. The outline of the genera, the schematic illustrations, and the key to typical 18 frontal-ventral-transverse-cirri genera of Oxytrichidae s. l. were clarified. Additionally, some morphological and morphogenetic patterns were summarized and compared.
文摘The decomposition kinetics of Algerian Tamazarte kaolinite(TK)was investigated using thermogravimetric analysis(TG).Differential thermal analysis(DTA)and TG experiments were carried out between room temperature and1400°C,at differentheating rates from10to40°C/min.The activation energies,measured by DTG from isothermal treatments usingJohnson-Mehl-Avrami(JMA)and Ligero methods and by non-isothermal treatments using Ozawa,Boswell and Kissinger methods,were around151and144kJ/mol,respectively.The Avrami parameter of growth morphology(indicating the crystallization mode)was found to be around1.57using non-isothermal treatments;however,when using isothermal treatments it is found to be equal to1.35.The numerical factor,which depends on the dimensionality of crystal growth,is found to be1.53using Matusita equation.Thefrequency factor calculated by the isothermal treatment is equal to1.55×107s-1.The results show that the bulk nucleation is followedby three-dimensional growth of metakaolinite with polyhedron-like morphology controlled by diffusion from a constant number ofnuclei.
文摘QRAL contraceptives are widely used to prevent pregnancy. A number of studies have dem- onstrated the increased risk of venous throm- boembolism in women taking oral contracep-tives.1, 2 Pulmonary embolism (PE) and deep vein throm- bosis (DVT) are two clinical presentations of venous thromboembolism which share the same predisposing factors.3 This article described a female patient who taked oral contraceptives and had an unhealthy life habit de- veloped PE and DVT. CASE DESCRIPTION
文摘The article discusses the problem of the unity of Ludwig Wittgenstein's philosophy. It is demonstrated that Wittgenstein applied two methods of study. Changes in his philosophy are correlated with modifications in his method of thinking and investigation. In his Tractatus Logico-Philosophicus, the only correct method is logical proposition analysis. In the early 1930s, he transformed his philosophy into a phenomenological description of experience, defining its aim as the development of phenomenological language. After 1933, Wittgenstein recognised the grammatical dimension of language and created tools of grammatical analysis. He introduced the notions of language-games and life forms. His philosophy turned into morphology and a description of human language practice.
基金supported by the Research Fund for the Doctoral Program of Higher Education of China(No.20120132120025)National Program on Key Basic Re-search Project(973 Program,2014CB138600)+1 种基金the Promotive Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province(No.BS2013 SW007)Modern Agro-Industry Technology Research System(No.nycytx-50-G07)
文摘A 12-week feeding trial was conducted to evaluate the effects of dietary stachyose on the growth performance, digestive enzymes activities and intestinal structures of juvenile turbot(Scophthalmus maximus L). Five isonitrogenous(49.58% crude protein) and isolipidic(10.50% crude lipid) diets were formulated to contain 0(Control), 0.625%(S-0.625), 1.25%(S-1.25), 2.5%(S-2.5) and 5%(S-5) stachyose, respectively. With the increase of stachyose level, the growth performance and feed utilization of turbot, such as the specific growth rate, final mean body weight, weight gain rate and feed efficiency, increased significantly(P < 0.05) and then stabilized. The feed intake of fish fed S-5 was significantly higher(P < 0.05) than that of fish in other groups. The activities of trypsin, intestinal caseinolytic, stomach and intestinal amylase were significantly influenced by stachyose(P < 0.05). The highest values of trypsin and intestinal caseinolytic activities were observed in group S-1.25, while the highest activity of stomach amylase and the lowest activity of intestine amylase were observed in group S-5. No lesion or damage was found on the distal intestine structures of fish from all treatments, while the height of simple folds in the distal intestine was significantly increased(P< 0.05) when 1.25% or 2.5% stachyose was added in the diets. These results indicated that moderate level of stachyose(1.25%) improves the growth performance, feed utilization, digestive enzyme activities and the distal intestine structures of juvenile turbot.
文摘Linguistic marker is a common phenomenon, and there are different levels of markers in various languages. Mark theory was first proposed by the Prague School in 1930s, which is an important principle of language analysis system. The function and meaning of markup languages are mainly pragmatic, which have procedural meaning and no conceptual meaning. Markedness phenomenon is not only the inherent characteristics of language symbols, but also the product of social life and different cultures. Due to the great difference between cultural background and social environment of Chinese and English speaker, thus there are many similarities and differences in the language, society and culture mark. The mark phenomena of English nouns are mainly related to the category of nouns and the opposite nouns. However, Chinese nouns have no strict morphological changes. In this paper, we discuss the theory of mark phenomenon and analyze a contrastive study on mark phenomena of English and Chinese Languages.
文摘Most of the Zambian population, the poor people in affluent society, are enmeshed in the net of poverty. The Zambian government seems to have failed in its contractual obligation to respect and sustain its social contract with the people. There is a seemingly total collapse of social security, increased unemployment rate and consequently decreased living conditions among the youth. This study sets out to investigate the correlation between unemployment and living conditions in Kaunda Square Stage II by analyzing the impact of unemployment and suggests strategic solutions to mitigate the levels of unemployment. The primary objective of this study is to investigate the impact on the living conditions caused by unemployment in Zambia specifically in Kaunda Square Stage II and adopt strategic solutions that will mitigate creation of jobs to improve the living conditions. The study underscores that unemployment is a universal phenomenon, not necessarily a peculiar characteristic of any segment of the society. Reducing poverty, preventing excessive inequality, and generating adequate employment are the three most important goals of a macroeconomic strategy that seeks to improve the living standards of the population. Inequality and employment are each a complex phenomenon and difficult to capture with a single measurement, particularly in a low-income economy undergoing change. It is in this context that the study intends to investigate the correlation between unemployment and living conditions in Kaunda Square Stage II and to provide strategic solutions that may improve living conditions in Kaunda Square Stage II. The study concludes that high unemployment in Kaunda Square Stage II increases poverty which subsequently affects living conditions. Therefore, when, unemployment rates increase the opportunities for earning income decreases which instigate individuals to be poor. The paper closes with reflections on how good strategic solutions can be used to underwrite more employment reduction strategies.
文摘The living morphology and infraciliature of a heterotrichous ciliate, Folliculinopsis producta (Wright, 1859) Frauré Fremiet, 1936, which was collected from the north coast of China, were investigated by in vivo observation and protargol impregnation techniques. As a new contribution, a redescription is presented: large Folliculinopsis of green to dark green in color, 800-1500 μm in size; two peristomial lobes of approximately equal size, 300-400 μm in length; adoral zone of membranelles containing about 1000 membranelles, lying along lobe margins and exhibiting two circles within buccal cavity; 50-70 somatic kineties in mid body; macronucleus miniliform, consisting of about 20 beads; lorica smooth, vase shaped, (300-500) μm×(90-130) μm in size, with 5-12 spiral ridges on neck tube; marine habitat.
基金Supported by the Fund of Hubei 2011 Cooperative Innovation Center and project for College Students Innovation and Entrepreneurship(Grant 4)Hubei University of Medicine(201310929004)
文摘Objective To explore the effects of Scutellaria baicalensis on activity and biofilm formation of Klebsiella pneumonia(Kp).Methods The broth and agar dilution methods were carried out to determine minimum inhibitory concentration and minimum bactericidal concentration of Scutellaria baicalensis for TW518.VITEK-32 system was used to assay TW518 susceptibility to antibiotics.Kp biofilms were formed in vitro and stained with Bac Light Live/Dead stain.The class integron geneⅠ1 m RNA expression was analyzed with RT-PCR.Results The minimum inhibitory concentration of Scutellaria baicalensis on TW518 identified as a Kp colony was 32 mg/ml,and minimum bactericidal concentration was 64 mg/ml.Scutellaria baicalensis and broad-spectrum penicillin,cephalosporin,quinolones,or beta-lactamase had synergistic bactericidal effects.Biofilm formation activity of Kp treated with Scutellaria baicalensis was significantly lower than that of the control group.And class integron geneⅠ1 m RNA expression of TW518 was significantly inhibited by Scutellaria baicalensis.Conclusions Scutellaria baicalensis has sterilization effect on Kp,and Scutellaria baicalensis could effectively inhibit Kp biofilm formation with prolonged treatment.Scutellaria baicalensis might inhibit Kp biofilm formation through down-regulating integron geneⅠ1 expression.